2005 47th Annual Meeting of the Division of Plasma Physics
Monday–Friday, October 24–28, 2005;
Denver, Colorado
Session QI2: Z-Pinch/ICF Physics
9:30 AM–12:30 PM,
Thursday, October 27, 2005
Adam's Mark Hotel
Room: Plaza Ballroom EF
Chair: Gregory Moses, University of Wisconsin
Abstract ID: BAPS.2005.DPP.QI2.1
Abstract: QI2.00001 : Capsule implosions driven by dynamic hohlraum x-rays
9:30 AM–10:00 AM
Preview Abstract
Abstract
Author:
James Bailey
(Sandia National Laboratories)
Dynamic hohlraum experiments at the Z facility already implode capsules with
up to 80 kJ absorbed x-ray energy. However, many challenging issues remain
for ICF. The present experiments use diagnostic capsules to address two of
these issues: symmetry measurement and control and building understanding of
the capsule/hohlraum implosion system. A suite of x-ray spectrometers record
time and space resolved spectra emitted by Ar tracer atoms in the implosion
core, simultaneously from up to three different quasi-orthogonal directions.
Comparing the results with simulation predictions provide severe tests of
understanding. These data also can used to produce a tomographic
reconstruction of the time resolved core temperature and density profiles.
X-ray and neutron diagnostics are used to examine how the implosion
conditions change as the capsule design changes. The capsule design changes
include variations in CH wall thickness and diameter, Ge-doped CH shells,
and SiO$_{2}$ shells. In addition, a new campaign investigating Be capsule
implosions is beginning. Be capsules may offer superior performance for
dynamic hohlraum research and it may be possible to investigate NIF-relevant
Be implosion issues such as the fill tube effects, sensitivity to columnar
growth associated with sputtered Be capsule fabrication, and the effect of
Cu dopants on implosion conditions.
Sandia is a multiprogram laboratory operated by Sandia Corporation, a
Lockheed Martin Company, for the U.S. Dept. of Energy under contract No.
DE-AC04-94AL85000.
* In collaboration with G.A. Rochau, G.A. Chandler, S.A. Slutz, P.W. Lake,
G. Cooper, G.S. Dunham, R.J. Leeper, R. Lemke, T.A. Mehlhorn, T.J. Nash,
D.S. Nielsen, K. Peterson, C.L. Ruiz, D.B. Sinars, J. Torres, W. Varnum,
Sandia; R.C. Mancini, T.J. Buris-Mog, UNR; I. Golovkin, J.J. MacFarlane,
PRISM; A. Nikro, D. Steinman, J.D. Kilkenny, H. Xu, General Atomics; M.
Bump, T.C. Moore, K-tech; D.G. Schroen, Schafer
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2005.DPP.QI2.1